Here's the output of my irb session after I issued the proper require command: But I was Googling in English. uninitialized constant ActionController::Session::MemoryStore Reported by bille2 | February 4th, 2009 @ 08:23 PM | in 2.x I have installed the 2.3RC1 and as start an existing projet, that is working on 2.2 the server stop its launch with the error: Stack Overflow Public questions and answers; Teams Private questions and answers for your team; Enterprise Private self-hosted questions and answers for your enterprise; Jobs Programming and related technical career opportunities; Talent Hire technical talent; Advertising Reach developers worldwide


===== @@session = ActionController::Integration::Session.new ===== At the time of this post, I only saw three hits when Googling on "ruby", "rails", and "uninitialized constant CGI::Session::ActiveRecordStore (NameError)". >> tmp = Tempfile.new NameError: uninitialized constant Tempfile from (irb):1 Solution. I am redirected to /login and it errors. uninitialized constant ActionController::Integration (NameError) Fix: To comment out the line below from environemnt.rb file and replace it with the normal action mailer settings in the production.rb file. This "NameError: uninitialized constant" looks intimidating, but it's actually not a big deal: I just forgot to require the tempfile package. Started GET "/admin" for 127.0.0.1 at 2014-07-22 20:26:22 +1000 Processing by Spree::Admin::OrdersController#index as HTML Spree::Preference Load (2.4ms) SELECT … 2 links to Japanese blog posts, the 3rd to a Rails forum in Polish. Am having a problem with Spree where I'm getting Spree uninitialized constant Spree::UserSessionsController when I try to go to the /admin page.
I am just starting out learning Ruby on Rails and am trying to design a microposts site where users can post and follow other users. None helped me resolve the above problem.